User MANUAL 888-2715-001 Maxiva ULX ATSC Series Digital Transmitter Maxiva ULX ATSC Series Digital Transmitter T.M. No.
ii 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
Technical Assistance Technical and troubleshooting assistance for HARRIS Transmission products is available from HARRIS Field Service (factory location: Quincy, Illinois, USA) during normal business hours (8:00 AM - 5:00 PM Central Time). Telephone +1-217-222-8200 to contact the Field Service Department; FAX +1-217-221-7086; or E-mail questions to tsupport@harris.com. Emergency service is available 24 hours a day, seven days a week, by telephone only.
iv 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
Manual Revision History Maxiva ULX ATSC Series Digital Transmitter User Manual REV. DATE ECN A FEB 2010 - 2/19/10 Pages Affected Created 888-2715-001 MRH-1 WARNING: Disconnect primary power prior to servicing.
MRH-2 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
Guide to Using Harris Parts List Information The Harris Replaceable Parts List Index portrays a tree structure with the major items being leftmost in the index. The example below shows the Transmitter as the highest item in the tree structure. If you were to look at the bill of materials table for the Transmitter you would find the Control Cabinet, the PA Cabinet, and the Output Cabinet.
viii 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
x 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
! WARNING: TTHE CURRENTS AND VOLTAGES IN THIS EQUIPMENT ARE DANGEROUS. PERSONNEL MUST AT ALL TIMES OBSERVE SAFETY WARNINGS, INSTRUCTIONS AND REGULATIONS. This manual is intended as a general guide for trained and qualified personnel who are aware of the dangers inherent in handling potentially hazardous electrical/electronic circuits. It is not intended to contain a complete statement of all safety precautions which should be observed by personnel in using this or other electronic equipment.
xii 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
FIRST-AID Personnel engaged in the installation, operation, maintenance or servicing of this equipment are urged to become familiar with first-aid theory and practices. The following information is not intended to be complete first-aid procedures, it is a brief and is only to be used as a reference. It is the duty of all personnel using the equipment to be prepared to give adequate Emergency First Aid and there by prevent avoidable loss of life. Treatment of Electrical Burns 1.
xiv 888-2715-001 2/19/10 WARNING: Disconnect primary power prior to servicing.
Table of Contents Section 1 Introduction Purpose of This Manual . . . . . . . . . . . . . . . . . . . . General Description. . . . . . . . . . . . . . . . . . . . . . . . Maxiva ATSC Series Transmitter Models . . . . . System Block Diagram. . . . . . . . . . . . . . . . . . . . Transmitter Control System . . . . . . . . . . . . . . . . Transmitter RF Power Control . . . . . . . . . . . . . . Admin Setup (Local GUI Only) . . . . . . . . . . . . . . . 2-23 System Setup . . . . . . . . . . . . . . . . . . . .
Table of Contents 2
Maxiva ULX ATSC Series User Manual Section 1 Introduction 1.1 1 Purpose of This Manual This user manual contains the information pertaining to the Maxiva ULX Series, solidstate, UHF, ATSC digital TV transmitter. The various sections of this technical manual provide the following types of information. 2/19/10 • Section 1, Introduction, provides general manual layout, photos, equipment description, block diagram and general specifications.
Maxiva ULX ATSC Series User Manual Section 1 Introduction 1.2 General Description This section contains a general description of the Maxiva ULX Series ATSC digital television transmitters. Included in this section will be descriptions of the Control System, Power Amplifier, block diagrams of the different models and system specifications.
Maxiva ULX ATSC Series User Manual Section 1 Introduction . Main Breakers Control Breakers Coolant Hoses In/Out RF Output Line Upper 8 Way Combiner Upper 8 Way Splitter Final Reject Load 3dB Combiner Redundant Cabinet Blowers (2) Lower 8 Way Combiner Lower 8 Way Splitter Figure 1-2 ULX 12300AT Rear View 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 1 Introduction 1.2.1 Maxiva ATSC Series Transmitter Models The Maxiva ULX Series ATSC transmitter is available in 13 liquid cooled power levels.
Maxiva ULX ATSC Series User Manual Web Remote / Monitoring Section 1 Introduction 16 PA’s Ethernet Pre-Drivers Driver-PAs TO OTHER CABINETS System /CAN Bus TO N+1 CONTROLLER N+1 CAN Bus Exciter CAN Bus ÷ Ethernet Ethernet EX 1 EX 2 CAN Bus Front Panel Buttons RF SWITCH GUI PUMP CONTROL INTERLOCKS PARALLEL REMOTE TCU DIR COUPLER Ȉ PA INTERFACE TO PUMP MODULE PA Bus INTERLOCKS PS AND COOLING MONITOR PARALLEL CONTROL RF MONITORING AC Distribution Bus L1 L2 LEAK DETECTOR CABINET F
Section 1 Introduction Maxiva ULX ATSC Series User Manual The heart of the control system is the TCU which is responsible for control, monitoring and protection. The TCU contains the MCM (master controller module) which controls all critical transmitter functions and the PCM (processor control module) which provides enhanced monitoring and control, exciter and cabinet data collection, fault logs and web remote connectivity.
Maxiva ULX ATSC Series User Manual 1.2.4 Section 1 Introduction Transmitter RF Power Control The PA modules operate in open loop mode (no gain or level adjustment). The transmitter RF power control is done via the Phase and Gain Board located in the predriver modules. The predrivers are the only components in the drive chain (besides the exciter) capable of adjusting their RF power based on commands from the TCU. Each cabinet can also be placed in the "Manual Power Control Mode".
Section 1 Introduction Maxiva ULX ATSC Series User Manual advantage of the CAN bus is that it requires only 2 wires of the system control bus ribbon cable, eliminating a large amount of discrete wiring which would otherwise be required. The system bus ties TCU’s in each cabinet together. The cabinet bus is for the most part a duplicate of the system bus but intended to connect nodes within each individual cabinet. The cabinet bus originates in the MCM module within each TCU.
Maxiva ULX ATSC Series User Manual Section 1 Introduction The amplifier and driver modules are interchangeable and do not contain microcontrollers but instead use a CPLD based monitor board in each PA to report faults to the TCU and to take appropriate self-protective action if needed. Figure 1-5 PA Module Simplified Block Diagram 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 1 Introduction 8 AC-DC Converter Modules 4 RF Pallets Diagnostic Port Status LED’s Figure 1-6 Maxiva PA Module (cover removed) The diagnostic port shown in Figure 1-6 allows the operator to connect directly to the PA module with a handheld device and obtain PS voltages, fault status, FWD and REF RF power levels and internal temperatures. The diagnostic port can also be used to reprogram the CPLD as required.
Maxiva ULX ATSC Series User Manual Section 1 Introduction c d b a e f Coolant In/Out g i RF Out h Figure 1-7 Maxiva ULX PA Module (top view, cover removed) Each PA module consists of the following components: a. Monitor Board - Responsible for all monitoring and protection of the module. Reports to the transmitter TCU via the parallel control lines. b. Connector I/O Board -I/O Connector Board provides interface connections between PA Module and transmitter back plane.
Section 1 Introduction Maxiva ULX ATSC Series User Manual e. Splitter Board - The splitter board equally divides the RF signal between four (4) power amplifier pallets. The splitter is broadband (covers TV band IV/V). The splitter board also delivers a detected RF sample to the monitor board to indicate input power level and provide protection from excessive input drive power. f.
Maxiva ULX ATSC Series User Manual 1.2.7 Section 1 Introduction Transmitter Power Supplies Three phase AC mains must be supplied to the cabinets via circuit breaker CB23 and CB24 on the AC mains input assembly (A15).
Maxiva ULX ATSC Series User Manual Section 1 Introduction d. Supply and return line hose and fittings. e. PCI (pump control interface) located in the TCU f. Transmitter PA Module, Splitter and Combiner Cold Plates The liquid cooling system is an efficient closed loop, pressurized system. Prior to operation the cooling system must be properly prepared for operation and bled to remove trapped air. Instructions for cooling system preparation can be found in the ULX technical manual.
Maxiva ULX ATSC Series User Manual 1.2.8.1 Section 1 Introduction Cooling System Control Panel The cooling system control panel controls the operation of the pump module/heat exchanger, and sends fault and status information to the TCU. The cooling system control connects to the RF Detector/Pump Control/Interlocks card in the TCU for monitoring and control. NOTE: The control panel and pump module is designed for indoor use only.
Maxiva ULX ATSC Series User Manual Section 1 Introduction AC Isolator ON/OFF Pump-A Run LED Pump-B Run LED Temp Controller Fan-A Run LED Pump-A Selected Fan-B Run LED Heat Exchanger Fans MANUAL/OFF/AUTO Pump-B Selected System Control LOCAL/OFF/REMOTE Pump Select Figure 1-9 Cooling System Control Panel a. ISOLATOR - ON/OFF b. HEAT EXCHANGER FANS - Manual, OFF, or Remote c. PUMP SELECT - A or B pump is selected when pressed d. TEMP CONTROL - Sets fan cycle temps.
Maxiva ULX ATSC Series User Manual Section 1 Introduction h. PUMP - B RUN (ON = Green) i. FAN - A RUN (ON = Green) j. FAN - B RUN (ON = Green) k. PUMP - A SELECTED (ON = Green) l. PUMP - B SELECTED (ON = Green) m. PLC STATUS INDICATOR When System Control is in Remote mode, see Figure 1-9, the transmitter is responsible for control of the cooling system, including ON/OFF, manual pump selection and automatic pump switching in the case of a failure.
Maxiva ULX ATSC Series User Manual Section 1 Introduction 1.2.8.2 Pump Module/Heat Exchanger The control panel/pump module and heat exchanger are separate units each in a rack. The control panel and pump module are self-contained in one rack and include a PLC (programmable logic controller), an expansion tank, air purger, pressure gauges, a strainer and dual pumps operating in main/standby mode.
Maxiva ULX ATSC Series User Manual Section 1 Introduction Figure 1-11 Heat Exchanger (before installation) NOTE: The heat exchanger shown in Figure 1-11 is a 2 fan unit. It is shown on a shipping pallet. The two fans that are shown pull air up through the cooling coil/fins (not visible in the photo) if unit if mounted horizontally (as shown). This unit can be mounted horizontally or vertically depending on how the legs are attached to the heat exchanger. Smaller transmitters may use only one fan. 1.2.8.
Section 1 Introduction Maxiva ULX ATSC Series User Manual selected a status signal is sent to the PCI reporting the mode selection. Loss of flow for more than 5 seconds in an active pump will cause activation of the standby pump. Loss of flow for more than 15 seconds will cause both pumps to shut down. 1.2.8.3 PA Module and Combiner Cold Plates Each PA Module has a liquid cooled cold plate which connects to the cooling system with quick release connectors.
Maxiva ULX ATSC Series User Manual Section 1 Introduction Figure 1-12 ULX 12300AT Liquid Cooling System (Internal) 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 1 Introduction 1.2.9 M2X Multimedia Exciter The M2X exciter is used with the Maxiva ULX Series transmitter. This exciter is described in a separate instruction book. A second hot standby exciter, and drive chain switcher is available as an option. The exciter is controlled by the transmitter using an internal CAN bus or Ethernet connection.
Maxiva ULX ATSC Series User Manual 1.3 Section 1 Introduction General Specifications NOTE: Specifications subject to change without notice. Unless otherwise noted specifications apply at the output of the Harris supplied mask filter. Specifications continue on following pages. 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction 1-24 Maxiva ULX ATSC Series User Manual 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual 2/19/10 Section 1 Introduction 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction 1-26 Maxiva ULX ATSC Series User Manual 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 2 Operation 2.1 2 Introduction This section gives detailed operational information for the Maxiva ULX Series SolidState UHF TV transmitter. Information will pertain mostly to the operation and navigation of the TCU graphical user interface (GUI) touchscreen display. NOTE: Operation of the M2X exciter is covered in a separate manuals which ships with the transmitter. 2.2 Transmitter Control Panel The front panel user interface is a 5.
Maxiva ULX ATSC Series User Manual Section 2 Operation Figure 2-1 Transmitter Control Unit (TCU) NOTE: A similar set of GUI screens is available via web browser with an ethernet network connection and the optional eCDi hardware interface. 2.2.1 Hardware Control Buttons To the right of the touchscreen, there are 6 pairs of hardware control buttons which are part of the front panel overlay. Located to the left of the buttons are Status LED’s which are green under normal, no fault conditions.
Maxiva ULX ATSC Series User Manual Section 2 Operation NOTE: The system control buttons described above will be referred to as hardware control buttons in the following manual text. PCM Reset Figure 2-2 TCU Front Panel Lowered Should the GUI screen go gray, i.e., the software buttons or symbols are still visible but have turned shades of gray instead of the usual color scheme, a TCU reset may be required.
Maxiva ULX ATSC Series Section 2 Operation User Manual There is another reset button toward the bottom of the MCM board (farthest board to the right). This reset button will also reset the TCU but it will take the transmitter off the air for a short time Just above the MCM Reset button is a removable memory card containing system software. This card should be installed in any replacement MCM card that is installed. 2.
Maxiva ULX ATSC Series User Manual Section 2 Operation System Forward Power Bargraph Transmitter Model Number Reflected Power Bargraph Fault & Operational Status Forward and Reflected Power Outputs 100% Mark - Based on Nominal Power Output setting in System Setup screen Figure 2-3 Global Display Header The second line of the display has operational and status information including: a. ON, Standby, Fault OFF, ON/FB (transmitter foldback), PS MUTE, and RF MUTE status indication.
Maxiva ULX ATSC Series Section 2 Operation User Manual b. Transmitter Forward power output reading in numerical format (for multiple cabinet transmitters this would be a system power reading and not for a single cabinet). It is important to note that this is the power output after the filter. c. Transmitter Forward power output reading in a Bargraph format. The 100% mark is based on the nominal power level or TPO (Transmitter Power Output) entered into the configuration screen.
Maxiva ULX ATSC Series User Manual 2.4 Section 2 Operation GUI Home Screen The HOME screen shown in Figure 3-3 is the primary operator screen and the default screen after boot up. The HOME screen contains the most important general operator information such as: a. Cooling status b. Power supply status c. Drive chain selection (pre-driver and IPA status) d.
Maxiva ULX ATSC Series Section 2 Operation User Manual The quickest way to access the HOME screen is to press either the HOME button on a main menu screen or the BACK button arrow on a submenu screen followed by a HOME button press on the main menu screen. There are five touchscreen navigation buttons on the right side of the GUI Home display. These buttons vary from screen to screen. The software menu buttons can also act as status indicators and turn red if a fault condition is detected.
Maxiva ULX ATSC Series User Manual 2.5 Section 2 Operation Drive Chain Main Menu If you press the Drive Chain button on the HOME screen, it will take you to the screen shown in Figure 2-5. The Drive Chain Menu structure is shown in Figure 2-24 on page 2-29. To Figure 2-6 To Figure 2-7 To Figure 2-4 Figure 2-5 Drive Chain Screen The Drive Chain screen is basically an exciter, pre-driver and IPA control and monitoring screen.
Maxiva ULX ATSC Series Section 2 Operation User Manual 1. Auto/Manual - Auto should be the standard position for normal operation. Placing it in Manual mode prevents an autoswitch to the alternate drive chain. In AUTO mode, if the on-air exciter drops below 50% of nominal power, or if the on-line exciter experiences a fault, the controller will automatically switch to the backup drive chain (if available).
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-7 To Figure 2-5 Figure 2-6 Drive Chain Faults Screen NOTE: Exciter A is always factory installed as the upper exciter unit. The optional exciter B is installed immediately above the TCU and below the top exciter unit (see layout photo Figure 1-1 on page 1-2). 2.5.2 Drive Chain Meters When the "Meters" button in Figure 2-6 is pressed, it will bring up the screen shown in Figure 2-6.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-6 To Figure 2-5 Figure 2-7 Drive Chain Meters Screen 2-12 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual 2.6 Section 2 Operation Power Amp Main Menu If you press the Power Amps button on the HOME screen, it will take you to the screen shown in Figure 2-8. The Power Amps Menu structure is shown in Figure 2-24 on page 2-29. To Figure 2-9 Viewed Cabinet PA Section Select To Figure 2-4 Figure 2-8 Power Amps Screen (PA Cabinet 1 ULX12300AT shown) This screen shows the current and forward power for individual PA modules in the indicated cabinet.
Maxiva ULX ATSC Series User Manual Section 2 Operation NOTE: Always be sure that you are accessing the desired cabinet number. The cabinet being viewed is indicated in the upper left corner of the screen. To get detailed information on a particular PA Module, press the Faults button on the right section of the screen. The Faults button will take you to the PA Faults screen shown in Figure 2-9. 2.6.1 PA Faults This screen is basically a list of all faults monitored in each PA Module.
Maxiva ULX ATSC Series User Manual 2.7 Section 2 Operation Output Main Screen If you press the Output button on the HOME screen, it will take you to the screen shown in Figure 2-10. The Output Menu structure is shown in Figure 2-23 on page 2-27. To Figure 2-11 Cabinet Indicators To Figure 2-4 Figure 2-10 Output Screen The main Output screen is has 3 main areas: • RF Output System - This panel gives the total system Forward and Reflected power, measured after the filter.
Maxiva ULX ATSC Series User Manual Section 2 Operation NOTE: If the load interlock is open and the transmitter is switched to the "Test Load" position, the transmitter output will be muted. If a test load interlock is not used the appropriate connection on the interlock connector on the customer I/O panel must be jumpered. For more information see UAX technical manual section two. 2.7.
Maxiva ULX ATSC Series User Manual 2.8 Section 2 Operation Power Supply Main Menu If you press the Power Supply button on the GUI screen it will take you to the screen shown in Figure 2-12. The Power Supply Menu structure is shown in Figure 2-24 on page 2-29. This is the power supply metering screen for both the low voltage power supply units (in the TCU) and the AC Mains.
Maxiva ULX ATSC Series User Manual Section 2 Operation 2.8.1 PS Faults This is the PS (power supply) Faults screen which lists of all of the monitored power supply faults for the AC mains and low voltage power supplies. An active fault will be highlighted in RED, while a warning condition will be highlighted in YELLOW. For a detailed explanation of these faults, refer to Section 6, Diagnostics.
Maxiva ULX ATSC Series User Manual 2.9 Section 2 Operation System Main Menu If you press the System button on the GUI screen, it will take you to the screen shown in Figure 2-14. The System Menu structure is shown in Figure 2-24 on page 2-29. To Figure 2-15 To Figure 2-16 To Figure 2-17 To Figure 2-4 Figure 2-14 System Main Menu This screen contains the System Main Menu which gives overall status information and access to additional System screens. This includes: a.
Maxiva ULX ATSC Series User Manual Section 2 Operation 2.9.1 System Faults This screen is accessed by pressing the Faults button on the System screen. An active fault condition is highlighted in RED while a warning condition is highlighted in YELLOW. For more information on these faults refer to Section 6, Diagnostics. To Figure 2-14 Figure 2-15 System Faults Screen 2.9.
Maxiva ULX ATSC Series User Manual • • Section 2 Operation Table 3-4, “Output Faults List,” on page 3-10 Table 3-5, “System Faults List,” on page 3-12 These tables are a quick reference list and in most cases is all that is required for advanced user to diagnose the problem. However, detailed information on each of these faults is also given in context with the fault page where it originated, also in Section 6.
Maxiva ULX ATSC Series User Manual Section 2 Operation 2.9.3 System Service This screen provides a way to change 3 pieces of information which are then used throughout the GUI. The System Service screen us shown in Figure 2-17 on page 2-22. • Station Name: This can be up to 24 characters and will appear at the top of every GUI screen • Model Number: This value is entered at the factory. The model number chosen must match the transmitter name plate.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-20 To Figure 2-22 To Figure 2-19 Figure 2-18 System Service Screen (Local) 2.9.3.1 Admin Setup (Local GUI Only) The Admin screen is accessed by pressing the Admin button shown on the Local GUI System Service screen shown in "Figure 2-18 System Service Screen (Local)" on page 2-23. The following parameters are accessed via the System Service Admin screen. 2/19/10 • Login: Allows access as Guest, Operator or Expert.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-20 Figure 2-19 System Admin Screen 2.9.3.2 2-24 System Setup • Sys Pwr Out (W): Set this value to the system nominal power output. This value determines the 100% level on the GUI power out bar. • Center Freq (MHz): Enter the center frequency for the desired operational channel. This only sets the transmitter frequency. It doesn’t set the exciter frequency.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-21 To Figure 2-17 Figure 2-20 System Setup Screen NOTE: The Save Setup button allows storage of up to eight setups for the purpose of N+1 operation. All the calibrations for the transmitter are saved in the MCM module. This means the transmitter can change to anyone of 8 channels and be fully calibrated by simply recalling the set up entry.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-17 Figure 2-21 Cabinet Setup Screen 2.9.3.4 System and Cabinet Power Calibrate See the UAX technical manual Section 5 for the procedure that utilizes these screens. 2.9.3.5 System Version Screen This screen shows the software revision for the TCU controllers. This information should be known before calling for technical support. 2-26 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 2 Operation To Figure 2-17 Figure 2-22 System Version Screen 2.9.3.6 System Network Screen This screen provides information about network settings. MAC, IP, Netmask and Gateway settings are given. To Figure 2-17 Figure 2-23 System Network Screen The System Network screen when viewed from the local GUI has an additional button called Save & Restart Network. When a change is made to one of the network parameters (IP address, mask, etc.
Maxiva ULX ATSC Series Section 2 Operation User Manual change is implemented. Save & Restart saves the change and restarts the network system so the change is made permanent and the new parameters become active. 2.10 GUI Menu Structures Figure 2-24 on page 2-29 shows the menus which can be accessed on the GUI. This menu tree may be helpful when learning to navigate the screens.
Maxiva ULX ATSC Series User Manual Drive Chain Section 2 Operation Faults Meters Power Amps Faults Output Faults Power Supply Faults Faults Faults Log Logs Clear Log System System Setup Service Version Cabinet Setup Cabinet Calibrate Calibrate Save Setup Trips Network Figure 2-24 GUI Menu Tree 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series Section 2 Operation 2-30 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual 3 Section 3 Diagnostics 3.1 Introduction This section contains diagnostic and troubleshooting information for the ULX series UHF transmitter. Included is a complete description of all faults which can be displayed via the transmitter front panel TCU display or GUI (Graphical User Interface).
Section 3 Diagnostics Maxiva ULX ATSC Series User Manual software buttons along the right side as shown in Figure 2-4 on page 2-7 another option is to start by going to the System Log and seeing what faults have occurred and in what order. If you are not familiar with GUI navigation, refer to Section 3. 3.2 GUI System Log The GUI contains a System Log which is a listing of all faults which have occurred. To see the System Log press SYSTEM then SYSTEM LOG. This will bring up the screen in Figure 3-1.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Figure 3-1 Fault Log Screen 3.3 Maxiva Three-Strike Fault Actions 3.3.1 Reflected Power Faults The TCU monitors reflected power at the Cabinet output and at the System output. When the reflected power level (typically 10% of the rated power or a 1.9:1 VSWR) is exceeded the TCU generates an RF MUTE.
Section 3 Diagnostics Maxiva ULX ATSC Series User Manual The module three strike policy is: • The TCU will try to restart the module three times within a 10 second window. After that, if a fault is still present, the module will be turned OFF until it receives the restart command from the Main Controller (ON Command). • • There is a 3 second delay between restart attempts. • The fault-strike restart process is the same as the system restart command, all of the module faults will be reset.
Maxiva ULX ATSC Series User Manual 3.4 Section 3 Diagnostics Fault Tables The following tables provide a listing of Maxiva Transmitter faults along with a brief description, the fault level or threshold and the action taken by the transmitter.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Table 3-1 Maxiva Drive Chain Fault List TYPE Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support Exciter B Power Output Exciter B power level low Trip point is 50% of nominal.
Maxiva ULX ATSC Series User Manual Table 3-2 TYPE Section 3 Diagnostics PA and IPA Module Fault List Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support Temperature Fault YES YES VSWR Fault YES YES Power Overload (including Input Power Overdrive) YES LD-MOSFET Failure YES YES Input Power Low YES YES 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Table 3-3 Power Supply Faults List TYPE Description Fault Level or Threshold Transmitte r Action Three Strike Available in Life Support +VA VDC FLT +15V Voltage Failure Value is more than +/15% of normal reading WARNING NO YES -VA VDC FLT -15V Voltage Failure Value is more than +/15% of normal reading WARNING NO YES +5 VDC FLT +5V Voltage Failure Value is more than +/15% of normal reading WARNING NO YES +3.3 VDC FLT +3.
Maxiva ULX ATSC Series User Manual Table 3-3 Section 3 Diagnostics Power Supply Faults List TYPE Description Fault Level or Threshold Transmitte r Action Three Strike Available in Life Support MOV Fuse 2 Fuse failed on MOV board FUSE OPEN WARNING NO YES MOV Fuse 3 Fuse failed on MOV board FUSE OPEN WARNING NO YES MOV Fuse 4 Fuse failed on MOV board Value is more than +/15% of normal reading WARNING NO YES 2/19/10 888-2715-001 WARNING: Disconnect primary power prior to servicing.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Table 3-4 Output Faults List TYPE Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support Cabinet VSWR (Reflected Power Fault) Cabinet Reflected Power has exceeded 10% of rated power Trip point is set at VSWR = 1.9:1. Trip point adjustable by epot RF MUTE, Fault OFF after 3strike.
Maxiva ULX ATSC Series User Manual Table 3-4 Section 3 Diagnostics Output Faults List TYPE Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support System Power Foldback The forward power is foldedback (reduced) to maintain the reflected power below 2.8% of nominal power (1.4:1 VSWR) Trip point is set at VSWR = 1.4:1.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Table 3-5 System Faults List TYPE Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support Air Temp Ambient control enclosure air temperature has exceeded 65°C. The source of this temp can be from the temp sensor in the MCM module for instance.
Maxiva ULX ATSC Series User Manual Table 3-5 Section 3 Diagnostics System Faults List TYPE Description Fault Level or Threshold Transmitter Action Three Strike Available in Life Support Coolant Outlet Temperature Coolant temperature has exceeded 55°C Warning at 55°C, Fault at 68°C WARNING. RF MUTE if coolant temperature reaches 68°C. Transmitter returns to ON state automatically when fault clears.
Maxiva ULX ATSC Series User Manual Section 3 Diagnostics Table 3-5 TYPE System Faults List Fault Level or Threshold Transmitter Action Three Strike Available in Life Support System RF Mute Interlock Open circuit Transmitter RF MUTE. Transmitter returns to ON state automatically when the interlock is closed. NO YES Cabinet Safety Interlock Open circuit Cabinet Fault OFF. A manual turn ON is required for recovery NO YES Cabinet RF Mute Interlock Open circuit Cabinet RF MUTE.
